Talking loud at work: You should always use an inside voice while working in your cubicle. No one wants to hear your conversation. Whispers and code talkers are almost as worse. (Photo: Highways Agency, Flickr)

Talking loud at work: You should always use an inside voice while working in your cubicle. No one wants to hear your conversation. Whispers and code talkers are almost as worse. (Photo: Highways Agency,

Talking loud at work : You should always use an inside voice... Photo-4229457.57172 - seattlepi.com

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Grooming: You might be tempted to fix that broken nail or pick something out of your teeth after lunch. But, it’s a terrible idea. You should never do any grooming at your desk. (Photo: Benjamin.Lim, Flickr)

Grooming: You might be tempted to fix that broken nail or pick something out of your teeth after lunch. But, it’s a terrible idea. You should never do any grooming at your desk. (Photo: Benjamin.Lim, Flickr)

Making lunch: Don’t smear that mustard or pile on the turkey... Photo-4229497.57172 - seattlepi.com

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Footwear: Few people like the sight of feet, and there are few reasons why fellow co-workers should ever see your feet. The other big no-no is taking your shoes off during work. No one – not even foot lovers – want to smell your feet. (Photo: Slyworking2, Flickr)

Footwear: Few people like the sight of feet, and there are few reasons why fellow co-workers should ever see your feet. The other big no-no is taking your shoes off during work. No one – not even foot lovers

Crying at work : There are some valid reasons to shed a tear at... Photo-4229458.57172 - seattlepi.com

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Over-the-top decorations: You are entitled to a few trinkets on your desk, but they shouldn’t be overwhelming. You can leave your collector items and collection of bobble heads at home. (Photo: Grilled Cheese, Flickr)

Over-the-top decorations: You are entitled to a few trinkets on your desk, but they shouldn’t be overwhelming. You can leave your collector items and collection of bobble heads at home. (Photo: Grilled

Sleeping at work: You might feel drowsy or tired, but you should... Photo-4229462.57172 - seattlepi.com

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Cursing: By in large, cursing makes you seem unprofessional. If you can't control your own language, how does your boss know you're capable of steering that marketing project to the next level? (Photo: NickNavy92, Flickr)

Cursing: By in large, cursing makes you seem unprofessional. If you can't control your own language, how does your boss know you're capable of steering that marketing project to the next level? (Photo:

Working sick: When you worked a full day with those occasional sniffles, you were dedicated and tough. Today you're just gross. Your co-worker has moved past cringing and is applying hand sanitizer to her face. And guess who she's going to blame if she gets sick? (Photo: YayAdrian, Flickr)

Working sick: When you worked a full day with those occasional sniffles, you were dedicated and tough. Today you're just gross. Your co-worker has moved past cringing and is applying hand sanitizer to her face.

Taking photos at work: There is no good reason to take a photo... Photo-4229459.57172 - seattlepi.com

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Leftovers: If you aren’t going to eat it, you should dump it in the trash. Leftovers are bad enough in the fridge, left on your desk they will colonize. And mold is bad for business. (Photo: Richard Masoner, Cycelicious, Flickr)

Leftovers: If you aren’t going to eat it, you should dump it in the trash. Leftovers are bad enough in the fridge, left on your desk they will colonize. And mold is bad for business. (Photo: Richard Masoner,